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Model 42-41L

Neutron Detector

Indicated Use	Neutron survey and dose measurement
Detector Type	PRESCILA proton recoil scintillator
Sensitivity (²⁴¹AmBe)	≈ 350 cpm per mrem/hr
Detection Range	Thermal to 100 MeV neutrons
Angular Dependence	Within 15% over wide range of energies
Gamma Rejection*	≈ 400 cpm at 100 mR/h (¹³⁷Cs)
Operating Voltage	500 to 700 V (typical)
Connector	Series "C" (others available)
Construction	Aluminum housing with black powder coat with an ergonomic foam grip
Temperature Range	Temperature dependent
Drop Resistance	Survives 100g drops in three orientations
Size (H x W x L)	25.7 x 10.8 x 10.8 cm (10.125 x 4.25 x 4.25 in.)
Weight	2.2 kg (5 lb)

Note: For gamma backgrounds greater than 100 mR/h, we recommend using Model 42-31H.

Model	Description	Part Number
Model 3000	Digital Survey Meter	48-4035
Model 3001	Digital Survey Meter 4 detector setups	48-4036
Model 3-IS	Intrinsically Safe Analog Survey Meter	48-3581
Model 12	Analog Survey Meter	48-1609
Model 2221	Analog Scaler-Ratemeter with Digital LCD Single channel analysis	48-2065
Model 2241	Auto-Ranging Digital Scaler-Ratemeter RS-232 port	48-2444
Model 2350-1	Digital Datalogging Meter Stores 1000 data points Supports 16 detector setups	48-2751
Model 2363 with 42-41L	Neutron Dose Survey Meter Analog & Digital Scaler-Ratemeter Internal GM Detector External Model 42-41L Detector	48-3514